Logisys 4801 All Black 4U Industrial Rackmount Cases CS4801BK Black Drive Expansion: 3 x External; 5.25" Drive Bays; 1 x External 3.5" Drive Bay; 7 x Internal 3.5" Drive Bays; Expansion Slots: 7; Front Ports: 2 Front Access USBs Motherboard Compatibility: Up to 12" x 9.6" ATX Cooling System: 2 x 80mm Fans, 1 x 120mm Fan Form Factor: 4U